I don’t want you to get your hopes up

Hello, my friend (29M) and I (29H) are going out a lot lately, on one of those outings, a lot of things happened. From then on I’m confused, because I love her, but I feel like I want to meet more people and enjoy what’s left of my youth, she clearly wants something serious, but I don’t. I also don’t want to hurt him because I love him very much. I need your opinion.